Acute Hemorrhagic Myositis in Inflammatory Myopathy and Review of the Literature

Figure 5

(a) Autopsy of the psoas muscle. Skeletal muscles: nonuniform degree of interior scattered segments of necrotic myofibers in the psoas fascicles without perifascicular myofiber atrophy or necrosis. Extensive morular aggregation of myofiber nuclei in the damaged myofibers (see arrow). Minimal perimysial and endomysial fibrosis, suggesting an acute process. Finding may suggest possible sepsis with intravascular coagulation and capillary disruption. (b) Calcium deposition found in myofiber (see arrow).

(a)

(b)